Polaris Sportsman 400 Service Manual page 315

BRAKES
MASTER CYLINDER ASSEMBLY, CONT.
3. Dip piston in clean DOT 3 brake fluid, attach spring to
piston, and install assembly into installation tool.
CAUTION:
Do not attempt to install the piston without the required
installation tool. Do not allow the lip of the seals to turn in-
side out or fold.
4. Push the piston assembly through the installation tool
using the plunger handle. Continue pushing until
plunger is solid against installation tool.
5. Hold piston assembly inward while removing both
tools. Install dust seal plate, spring and plunger.
Install a new dust seal. Be sure dust seal is completely
seated in the groove.
NOTE: The piston assembly should move freely in the
bore, and spring back against the seal when released.
6. Apply a light film of grease to the lever pin. Install lever
and c-clip.
9.12
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